742726417 has 2 divisors, whose sum is σ = 742726418. Its totient is φ = 742726416.

The previous prime is 742726363. The next prime is 742726429. The reversal of 742726417 is 714627247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 699285136 + 43441281 = 26444^2 + 6591^2 .

It is a cyclic number.

It is not a de Polignac number, because 742726417 - 2²³ = 734337809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 742726417.

It is not a weakly prime, because it can be changed into another prime (742720417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371363208 + 371363209.

It is an arithmetic number, because the mean of its divisors is an integer number (371363209).

Almost surely, 2^742726417 is an apocalyptic number.

It is an amenable number.

742726417 is a deficient number, since it is larger than the sum of its proper divisors (1).

742726417 is an equidigital number, since it uses as much as digits as its factorization.

742726417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131712, while the sum is 40.

The square root of 742726417 is about 27253.0074854134. The cubic root of 742726417 is about 905.6136440325.

The spelling of 742726417 in words is "seven hundred forty-two million, seven hundred twenty-six thousand, four hundred seventeen".